It seems that sometimes when I turn on 4g my evo starts to lag. Opening apps, typing, receiving messages...etc. but when I turn it off its still laggy and i have to restart to make it go back to normal. This appears to be completely random as it doesn't do it all the time, only sometimes. It doesn't matter whether I have good reception or not. Does this happen to anyone else? If so is there a fix for this or am I just stuck. Posted from my evo